Saikyou Mahou Shoujo Akira

Akira, a teenager, has a quiet crush on his classmate Toriko, but he is so nervous that he has never even spoken to her. One day, he finds a ring lying on the ground, and carelessly puts it on his finger. Suddenly, he is transformed into a powerful magic girl, complete with a supernatural companion to guide him! As a 9-year-old magic girl, he can...